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Share-Based Compensation Plans (Tables) | 12 Months Ended
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Dec. 31, 2017
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Weighted-Average Assumptions Used to Estimate the Fair Value of Each Share Option Award | The fair value of each share option award on the date of grant was estimated using the Black-Scholes method based on the following weighted-average assumptions:
|  | Year Ended |
|  | December 31, 2017 |  |  | January 1, 2017 |  |  | January 3, 2016 |
Risk-free interest rate |  |  | — |  |  |  | — |  |  |  | 1.8 | %
Expected term |  |  | — |  |  |  | — |  |  | 5.8 years |
Expected volatility |  |  | — |  |  |  | — |  |  |  | 57.0 | %
Expected dividend yield |  |  | — |  |  |  | — |  |  |  | 2.8 | %
Summary of Share Option Awards | A summary of the status of the Company’s share option awards is presented below:
|  | Shares |  |  | Weighted- Average Exercise Price |  |  | Weighted- Average Remaining Contractual Life (In Years) |  |  | Aggregate Intrinsic Value |
Outstanding at January 1, 2017 |  |  | 224,379 |  |  | $ | 14.13 |  |  |  |  |  |  |  |  |
Granted |  |  | — |  |  |  | — |  |  |  |  |  |  |  |  |
Exercised |  |  | (11,086 | ) |  |  | 6.07 |  |  |  |  |  |  |  |  |
Forfeited or Expired |  |  | (69,000 | ) |  |  | 23.82 |  |  |  |  |  |  |  |  |
Outstanding at December 31, 2017 |  |  | 144,293 |  |  | $ | 10.11 |  |  |  | 3.00 |  |  | $ | 159,083 |
Exercisable at December 31, 2017 |  |  | 130,543 |  |  | $ | 9.74 |  |  |  | 2.56 |  |  | $ | 159,083 |
Vested and Expected to Vest at December 31, 2017 |  |  | 144,256 |  |  | $ | 10.11 |  |  |  | 3.00 |  |  | $ | 159,083 |
Summary of Nonvested Share Awards Activity | The following table details the Company’s nonvested share awards activity for fiscal 2017:
|  | Shares |  |  | Weighted- Average Grant- Date Fair Value |
Balance at January 1, 2017 |  |  | 355,130 |  |  | $ | 12.86 |
Granted |  |  | 191,000 |  |  |  | 14.88 |
Vested |  |  | (137,135 | ) |  |  | 13.46 |
Forfeited |  |  | (31,960 | ) |  |  | 13.51 |
Balance at December 31, 2017 |  |  | 377,035 |  |  | $ | 13.61 |
The following table details the Company’s nonvested share unit awards activity for fiscal 2017:
|  | Units |  |  | Weighted- Average Grant- Date Fair Value |
Balance at January 1, 2017 |  |  | 27,750 |  |  | $ | 9.55 |
Granted |  |  | 21,000 |  |  |  | 13.90 |
Vested |  |  | (25,500 | ) |  |  | 10.15 |
Forfeited |  |  | — |  |  |  | — |
Balance at December 31, 2017 |  |  | 23,250 |  |  | $ | 12.82 |

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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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